Floristic Synthesis of North America, Version 1.0. Grow Native Nursery, 2 locationsClaremont, CA & West Los Angeles, CA. In California it is found in the Sierras and Coast Ranges, from Tulare County to Modoc and Siskiyou Counties. It is a perennial and has thick wooly stems that are low to the ground and bending upwards. About California Milkweed (Asclepias californica) 3 Nurseries Carry This Plant Add to My Plant List; Asclepias californica is a species in the Apocynaceae (Dogbane) family known by the common name California milkweed. Be the first to review this product! Narrowleaf milkweed is a perennial flower native to parts of the western U.S. Plant seeds during the cool season of Zones 9 and 10. All prices are in USD © 2020 Butterfly Encounters. California on average has approximately 270 days between the last and first frost. The fleshy fruits of milkweed contain seeds with fluffy hairs, which aid dispersal by wind. 3 Toxicity to Livestock It seems that the caterpillars pick up the parasite from eating the infected milkweed leaves. Common milkweed plants grow to about 2 to 4 feet in height, with a thin, vertical growth habit. California Pollinator Plants Native Milkweeds (Asclepias spp.) Most of the areas in which milkweed is found are frost freeze zones. Weather permitting, Game & Fish will plant milkweed in Cornville, Springerville and Safford in January and February. For decades the most common milkweed species in our gardens has been a Central American species sometimes called Tropical Milkweed, or more correctly Asclepias currassivica. The Ascelpias viridis (spider milkweed) plants will be spaced 1.5 to 2 feet apart. (visit our Holiday Hours), Copyright © 2020 | Roger’s Gardens | All Rights Reserved, Monarchs and Milkweed, What Gardeners Need to Know. It is a magnet for monarchs and even a single plant in a garden will soon display a few colorful caterpillars dining on its leaves. Ours do not travel from the Northern parts of North America to Southern areas every winter and then back again the following spring. (We recommend you take this action in October, but if you have let it grow … In Connie Day's Santa Monica garden, a tiger-colored monarch spars with another butterfly, chasing it from a patch of milkweeds. About November the foliage will quickly yellow and begin to dry. 2013. Common milkweed (Asclepias syriaca) is a native herbaceous perennial whose main virtue is its appeal to butterfliesespecially the monarch, which deposits its eggs on the milkweed. We supply Narrow-Leaf Milkweed Asclepias fascicularis seeds to individuals across southern California who would like to take action to help restore monarch populations. Flowers bloom from June to September, but may not bloom until the second year. Mia Monroe at Muir Woods. Whether native or tropical, make your milkweed choice carefully and manage your plants intelligently. I generally winter sow, as that is the easiest if you are trying to get a set number of plants. Milkweed is slender and doesn't need much room to grow so go ahead and plant many seeds! The seeds get darker as they mature. quester the plants’ chemical compounds, giving them pro-tection by making them distasteful to predators. Before planting the seeds, soak them in warm water for 24 hours to ensure that moisture breaks through their hard shells and reaches their tiny embryos. Water regularly allowing the soil to go nearly dry between each watering. According to Theodore Payne Foundation, wait until the weather warms up in March – here are their instructions. Hummingbirds, bees, and beneficial insects love it too! The question for many isn't whether to grow milkweed, but how -- and which kind. With deep purple flowers and white to gray fuzzy foliage this plant typically sprawls across the ground rather than growing upwards. Using the planting schedules below will help you get the most out of your garden. Almost always, more milkweed plants means more Monarch butterflies. This product hasn't received any reviews yet. Plant seed in fall in a sunny location. It disappears completely in the winter – and that is perfect for monarchs! Nonetheless, there still may be an issue. Zones 2-8 Plant in the spring after the danger of frost is gone. Tropical milkweed, Asclepias curassavica, was visited by this monarch caterpillar who is now off to find a … The range of desert milkweed extends from western Arizona and southern Nevada, into southeastern California and Baja California, Sonora, and Sinaloa, Mexico. Milkweed is also well known for attracting butterflies and serving as a host plant for their caterpillars. Water once, and then allow the winter rain and/or snow to provide moisture until the spring. When do you plant those seeds? California is the center of the distributions for six milkweed species used by monarchs; A. fascicularis (Mexican whorled/narrowleaf milkweed), A. erosa (desert milkweed), A. californica (California milkweed), A. cordifo- lia (heartleaf milkweed), A. eriocarpa (woolypod milkweed) and A. vestita (woolly milkweed). The monarchs in California are not those that winter in Mexico or that you read about when you were in school. Since the 1980’s, California’s monarch population has declined an estimated 97%. California. The seeds will germinate 10 - 20 days after the danger of nighttime freezing has past. There is growing evidence within the science community that non-native milkweeds may be causing changes in monarch migration habits and increasing the prevalence of a debilitating disease among the adult butterflies. It is native to California and northern Baja California from the East Bay region southward and the foothills of the Sierras. Call ahead to confirm species, quantity and verify plants have not been in contact with neonicotinoids or pesticides. Then, as Fall approaches, cut back your Mexican Milkweed to the ground. Plant seeds 1/8" deep and 18” apart, using 3 seeds per hole. When to plant milkweed. Photo by Jacoba Charles. Tropical milkweed is commonly grown as a host plant for monarch butterflies. Simply sprinkle seeds on well-tilled soil and pat them down, add a topdressing of soil, and water them in. In Southern California, gardeners have milkweed choices when outdoor plant shopping.For decades the most common milkweed species in our gardens has been a Central American species sometimes called Tropical Milkweed, or more correctly Asclepias currassivica.It is a magnet for monarchs and even a single plant in a garden will soon display a few colorful caterpillars dining on its leaves. 11. You can plant milkweed seeds in early spring as soon as the soil can be worked, but they will need to be stratified for 2 to 3 months in the refrigerator before … That way, the plant keeps putting out more flowers in an effort to fruit and reproduce. We promise to never spam you, and just use your email address to identify you as a valid customer. Roger’s Gardens no longer sells or recommends tropical milkweed. In Southern California, gardeners have milkweed choices when outdoor plant shopping. Your efforts will help bring back the Monarch’s and restore their populations to healthy levels. 2301 San Joaquin Hills Rd. Showy milkweed is native to much of the western half of North America. The large, pointed, banana-like leaves are arranged opposite on the stalk-like stem. Milkweeds in the genus Asclepias provide the only plant material monarch caterpillars can eat. Light: Young Milkweed plants need plenty of diffuse light as they grow.Plant in full sun locations. Planting local milkweed species is always best. After stra… don’t plant milkweed where it didn’t naturally grow AND plant the native species) Liam tucks in another universally solid suggestion: plant nectar plants! With a blooming period lasting from May through October, narrow-leaved milkweed provides plenty of nectar for adult monarchs, but more importantly, it provides the necessary leaves that Monarch butterflies depend upon, and not the harmful protozoa. To grow Swamp Milkweed from seed, cold stratify in a moist paper towel in the refrigerator for 2 months, stored in a zip lock bag. Fall-sown seed will be naturally stratified outside. They usually have three types of native milkweed beginning around March. If you live near overwintering sites, consider planting early spring, late-fall, and winter-blooming nectar plants instead of . Milkweeds are a necessary plant to The stems and leav… California milkweed, Asclepias californica is one of the most beautiful milkweeds in the Santa Monica Mountains. Biota of North America Program (BONAP). Roll the seeds in a damp paper towel, or place them in moist peat moss, and then put them in a plastic bag. It didn’t get much water, and grew in very hard soil, (in Southern California), so I took some branches, rooted them, grew it and am enjoying caterpillars and Monarch butterflies! Butterfly Weed (Asclepias tuberosa), Swamp Milkweed (Asclepias incarnata) are considered the best varieties for an ornamental garden. Sitemap Alternatively, you could direct sow in the fall, or winter sow the seeds. Pick a location with full sun and prepare soil for good drainage, if needed. It is an important monarch butterfly caterpillar host plant. Southern California Pro-tips. Drought tolerant, this California native plant grows in some high desert areas and into Baja California. After clearly labeling the sealed bag as \"milkweed seeds\" and dating it, place it in a refrigerator for 10 to 12 weeks. When the caterpillars hatch, they feed on the leaves of milkweed. Common Milkweed grows well in average garden soil. Narrow-leaved milkweed, or Asclepias fascicularis, is a relatively showy plant reaching about three feet in height with pale pink to cream colored flowers. Corona del Mar, CA 92625, Open Daily 9 AM – 8 PM NATIVE MILKWEED IN CALIFORNIA. Zone 5 Planting Schedule Zone 6 … The parent butterfly will lay its egg on the underside of a milkweed leaf. Map ©: Kartesz, J.T. The long, oblong leaves are light green and grow to about 8 inches long. Planting and Establishment. Those plants with high concentrations of the protozoan are more likely to kill monarch caterpillars or chrysalises. Pick a location with full sun and prepare soil for good drainage, if needed. Fall seed planting. Soil: There is a Milkweed variety for every landscape. Fortunately, our monarch butterflies in California and other western states are far less migratory than their Eastern brethren, so the issue of effecting their migration habits does not apply as much to our region. Planting Milkweed (Asclepias) is essential to creating a habitat for the beloved Monarch butterfly's survival, as they are the only plants on which Monarch caterpillars will feed. We will remain open and will continue to follow COVID Safety Measures. Milkweed plants, in all their various forms, are the exclusive foodplant of Monarch butterflies, so gardeners can play an important role in monarch ecology, and hopefully their recovery. Unlike Tropical Milkweed, which retains foliage all winter and even a few flowers, our native milkweed is completely winter dormant. Some seeds do need a hard frost to germinate, but milkweed seeds do not. You can collect your own seed or purchase seed or plants to add to your garden, or any landscape in your community. But they do move around regionally, just not like the big migrations of some areas. Tropical milkweed should be cut back to the ground in late fall, in areas with mild winters where plants do not die back naturally. Milkweed seeds require stratification to germinate. We recommend letting flowers stay in the garden. There are also many non-native varieties of milkweed that grow well here in southern California. Others have considered it toxic. Monroe: Besides the basic premise of learning from nature, by doing the research, (i.e. Spring seed planting. In northwest Florida, the milkweed species most planted has been tropical milkweed, Asclepias curassavica, as it is lush, showy and easy to grow. "The challenge is keeping the food here," Day says, noting that a few monarchs can defoliate a plant in a couple of weeks. In fact, many California plants do not need a frost to trigger germination, but it is on a species by species basis. My hope is that, if I can get California native milkweeds established in my garden, you should eventually be able to get the right kind of milkweed for Los Angeles via Cityscape Seeds. California Milkweed is native to the following state: California. Water once, and then allow the winter rain and/or snow to provide moisture until the spring. Matilija Nursery Moorpark, CA. Perhaps most famously, milkweed species serve as the host plant for the monarch butterfly. Although you can plant Milkweed in the spring after cold stratification and starting seeds indoors, fall is the easier — and more natural — time to plant. The invertebrate conservation group The Xerces Society recommends native milkweed species. With a minimum donation of $5, you will receive a packet of milkweed seeds and planting guide to turn your garden into a sanctuary for monarchs and pollinators. Native Narrow-leaved Milkweed is perfectly suitable to most of our gardens, as long as you understand its growth cycle and know what to expect. Tropical Milkweed (Asclepias currasavica) has many variations, but is commonly found in red/yellow or yellow. Shortly after this, the entire plant is generally cut back to near the soil line to let it rest until the following spring, when it will burst out with a fresh season of growth. Begin by planting the local, Native milkweed to promote future years of Monarch habitat in your garden. California milkweed grows in lower northern California, central and southern California as well as into northern Baja California. We suggest all tropical milkweed be removed from your garden, but we know that some gardeners will resist this request, especially when they see larvae abundantly feeding on it. And this popular plant hosts many more besides monarchs. Growing Instructions: Start California Milkweed seeds outdoors in late November. HISTORY & FOLKLORE Historically, various Native Americans throughout its range have used desert milkweed as a medicinal plant. Step 2: Add soil I like to pour a heaping amount of soil mix onto the center of my seed insert and then spread it evenly with the edge of my seed packet or anything with a straight edge. Three or four years ago I bought a milkweed plant at a local nursery with the hope of attracting monarch butterflies. If you miss the window of opportunity for fall planting, winter sowing milkweed seeds is also an option. This flowering plant is a hairy, erect perennial that grows to about 4 feet tall. Fertilize monthly in the summer with a general purpose fertilizer. When & Where To Plant Milkweed. 1-2 months after your seedlings have sprouted next spring, pinch off extra plants (or consider transplanting) to achieve ideal spacing for your specific milkweed. Once established, this native plant is a breeze to grow and requires little maintenance. My message is don’t baby this plant, it is a weed! Plant seeds 1/8" deep and 18” apart, using 3 seeds per hole. Other planned sites are near Buckeye, Black Canyon City and Bullhead City. Whether to grow milkweed from seed (l), transplants, or rhizomes may depend on the species and the location. If you prefer to plant the seeds outdoors in the spring, read our detailed instructions on cold moist stratification. Growing Instructions: Start California Milkweed seeds outdoors in late November. 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